Deal with Android's new networkstack key

BUG=b:170156734
TEST=run signing script locally
BRANCH=None

Signed-off-by: Victor HSieh <victorhsieh@chromium.org>
Change-Id: I4f045729241b479b56fef5687b721b5b59c2eed8
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2450551
Reviewed-by: George Engelbrecht <engeg@google.com>
3 files changed